Doorlock



May 28, 1935. e. VOIGHT DOORLOCK Filed 001;. 27, 1955 2 Sheets-Sheet 1 H. G. VOIGHTI 2,002,619

DOORLOCK Filed Oct. 27, 1955 2 Sheets-Sheet 2 May 28, 1935.

. M Tfi//////// ////J Patented May 28, 1935 UNITED STATES PATENT OFFICE J ao oasm k p g nooRLooK g 3 Henry Voight, N:ew Haven, Conn., assignor to Sargent'& Company, NewHaven, Conn, a cor- I itation of Connecticut 47 v Application October 27, 1933, Serial No. 695,448

"main (Giro-16)" This invention relates to looks and more particularly to the so-called unit: type locks wherein the entire lock unit'is assembled before being mounted and placed inan opening in the edge ofaadoor in assembled condition.

One objection to looks of this character has been that they are usually expensive, and as a result' have been used almost entirely in connection'with oifice or other public buildings heavy and expensiveuhardw'are is used.

One object of thepresent invention isthe proof a lock of thischaracter which *maybe economically manufactured and at the same time be serviceable and efficient in operation;-;" 1

'. Anotherobject of the invention is the provision of 'a so-c'alled unit type lock 'whichis relatively small in size whereby it may be mounted in a relatively small opening in a door so that it may be used in'locks. upon'interior doors ofdwellings or the vli'ke. I. H a a,

-JA siillfurther object of the invention isthe provision of a cheap and compact lock of-the character s'et forth which will operate satisfactorily and which maybe mounted ina relatively *small 5 sized opening in-the' doom and which at the same time maybe manufactured at a relatively low cost whereby it mayhave universal use. l

To these and other ends, :theinve ntion. consists inthe'novel features and combinations of parts to be hereinafterdescribedandclaimed. In the drawings: i -:Fig; l isan elevational-view of the" lock embodyingmyinvention mounted upon-a door;

':Fig. 2 is afrontedge view of the doorandlock;

'Fig. 3-is a sectional view through-the lock case takenon line3-3 of Fig. 2;-

I Fig. 4'is a transverse sectional view of thelock takenon line 4-4 ofFig. 1; a

Fig.5 is'a plan view of the lock casewith the cover and some of the parts removed; it Fig. 6is an enlarged sectional View on line 6-6 .1 Fig. is a plan view of the lockmechanism, a part of the cover beingbroken away to disclose the interiorparts, and e v 3 (I i Fig-8 is-a-detai1 view of the dead bolt.

. Toillustrate a preferred embodiment of my invention, I have shown my improved lock as mounted upon'a door 10. Thelock comprises a case i ll "having a cover I! and afront plate or face plate I3. The case just described may be termed an interior case as it is concealed byescutcheon plates 14 and I5. One'of'theescutcheon plates, in thisinstance the plate mounted upon the: outside" of thedoor; issecuredzdirectly. to a Where ranged to :provide for considerable adjustment of '5 the plate l5 toward and fromthe cover II of the innercase to allow for the lock being mounted upon doors of various thicknesses. The lock will be mounted with the escutcheon plate 1 4 adjacent the outer surface of the 'door, "and the screw I 8 l0 will'be threaded into the boss! 9 until the escutcheon plate 15 fits closely upon the inside surface of the door. I Y r l The cover plate I2 is; secured adacent its front end to the lock case by'means ofthe screw 20, 15

shown more particularly in Fig. 6, and at its rear end is secured to the lock case by means of a U- shapedclip 2| which embraces the edge of the cover plate l2 and is held fast to the case by means of the screw 22. This U-shaped clip is provided with legs 23 and 24 whichserve a tunetionin addition to holding the cover to the case, as wlllbe hereafter explained.

The lock mechanism consists of a latch bolt 25 having the usual beveled head 25; the bolt stem 25 at its rear end being providedwith yoke arms 21 and 28 engaged by the opposite ends of a rollback 29 secured to, or-formed integrally with,-the hub 30. A'spring 3| isimounted within a slot withinthe bolt stem and reacts between apost 30 32 in the'case and thehead of thebolt-to urgethe bolt to protracted position. It will be noted that the latch boltis mounted at the lower end of the look, and the yoke arm 21 is considerably offset-from the stem at the rear end of the case 35 to allow room above the stem and in the front end of the case for the dead bolt locking parts.

The knob hub 30, as shown more especially in Fig. 6, is what may be termed'a floating hub, in that it'has no bearing in the walls of the caseas 40 in the usual lock construction at the present time. This enables me to make the case more compact and to manufacture it more economically. The hub is held in place by means of the spindle 34, which in this instance is squarein 45.

40. The legs 23 and 24 of the clip member 2| project into the grooves 39 and All to hold the knob shanks against longitudinal movement relatively to the case, as well as to hold the rear end of the cover to the body of the case. It will be apparent that this construction provides a very simple and economical way of securing the knobs upon the case in. suitable bearings which are formed integrally with the case parts, and at the same time providing for the proper support of the hub in alignment with the knob shanks by having the hub carried by or supported by these shanks. It will be, noted that the case is provided with the thickened parts or bosses ll and 42 to provide the bearings for the knob shanks.

The lock is also provided with a dead bolt 45 having a stem 46 projecting rearwardly into the case, the stem being provided with a slot 41 within which is received a guide post 48 secured to the case. A tumbler 49 is pivoted on the post 48 and spring pressed downwardly, as shown in Fig. '7 by the-spring 50. Y

The tumbler 49 is provided with a slot 5| into which projects a lug 52; on the tumbler, which lug engages a post 53 formed on the bolt 45 to hold the bolt against accidental displacement from both retracted and protracted positions, as is well known in the art. Mounted below this tumbler in the case is a key hub or barrel 54 rotatably mounted in the sides of the lock case and provided with a key slot 55 into which the key 22 is conical in shape.

56 may be inserted. Thishub is provided with a cut-away portion 51 through which the'bitof the key projects to engage the tumbler 49 and raise it upon the pivot '48 so that the post 53 is disengaged from the lug 52. The hub 54 is provided with wings or rollbacks 59 and 50 projecting from opposite sides thereof, the rollback 60 being adapted to move upwardly from the position shown in Fig. 5 and engage the talons 6| on the dead bolt to move this bolt to protracted position.

Adjacent the wall of the case, a ward 52 is slidably mounted between guides 63 and 64 on the case and is urged downwardly to the position shown in Fig. 5 by the spring 65. This ward is provided with spaced arms 66 and 6'! having notches 63 and 656 to receive the rollbacks 5E! and 60. It will be noted that the rollback fill is slightly longer than the rollback 58 50 that the rollback 60 can never move downwardly past the lower edge of either of the notches. When this rollback is in the position shown in Fig. 5 the bolt 45 will be in retracted position. When the key is inserted in the hub, any attempt to turn the key in a clockwise direction will be prevented by the engagement of the rollback with the lower corner of the notch 69. The key can be turned, however, in an anti-clockwise direction, as shown in this figure, upon which movement the ward '62 will be moved upwardly against the tension of the spring and allow the rollback to move into engagement with the talons iii of the bolt to move it to protracted position. The rollback will be moved through an angle of 180 degrees until it rests in the notch 63, when further movement will be resisted by engagement with the lower corner ofthe notch 88. The reverse movement of the rollback will retract the bolt and restore the parts to their original positions.

It will be noted that the head it of the screw When the lock is inserted into the opening in the edge of the door, this screw head may be driven into the wood 1 of the door to locate and prevent any movement of the rear part of the lock. The case will be held in place otherwise by its connection to the two escutcheon plates, which are screwed to the door as shown at 12 in Fig. 1. These screws will enter the wood of the door rearwardly of the opening made for the lock case.

The operation of the lock will be clear from the foregoing description, and it will be apparent that the construction shown provides a compact and economically constructed door lock of the unit type having both latch and dead bolts, which lock may be mounted on a door with a minimum amount of labor.

While I have shown and described a preferred embodiment of my invention, it will be understood that it is not to be limited to all of the details shown, but is capable of modification and variation within the spirit of the invention and within the scope of the appended claims.

What I claim is:

1. A door lock comprising a case having a detachable cover, a knob shank rotatably mounted in the case, and common means for securing the cover to the case and preventing longitudinal movement of the shank relatively to the case.

2. A door lock comprising a case having a detachable cover, a knob shank rotatably mounted in the case, and a member secured to the case and embracing the edge of the cover to hold the latter in position, said member engaging the knob shank to prevent longitudinal movement thereof.

3. A look comprising a case, a lock bolt and operating mechanism therefor mounted in the being engaged with said shanks to preventlongitudinal' movement thereof.

4. A lock comprising a case, a lock bolt and operating mechanism therefor mounted in the case, a handle shank rotatably mounted at each side of the case, a member secured to the end of the case and having end portions embracing the sides of the case, said shanks being provided with peripheral grooves, and said end portions projecting into said grooves to prevent longitudinalmovement of the shanks.

- '5. A lock comprising a case and a cover therefor, a member secured to the case and embracing the cover to hold the latter in position, means'to secure said member to the case compris ng a screw having a conical head projecting from the rear edge of the case, and the head of said screw being adapted to be engaged with the material of the door to hold the case in place.

6. In a door look, a case, a latch bolt operatively mounted in the case, a knob shank at each side of the case, the ends of said shanks being rotatably mounted in bearings in the walls of the case, a hub within the case and disposed between the opposing ends of the knob shanks, means on said hub to actuate the latch bolt, a spindle non-rotatably secured within the hub and having its ends projecting therefrom, the projecting ends of said spindle being non-rotatably received in the ends of the knob shanks, and means secured to the case and engaging the knob shanks to prevent longitudinal movement of the latter relatively to the case.

. '7. In a door lock, a case, a latch bolt operatively mounted in the case, a knob shank at each side of the case, the ends of said shanks being rotatably mounted in bearings in the walls of the case, a hub within the case and disposed between the opposing ends of the knob shanks, means on said hub to actuate the latch bolt, a

spindle non-rotatably secured within the hub and having its ends projecting therefrom, the projecting ends of said spindle being non-rotatably received in the ends of the knob shanks, each of said knob shanks being provided with a circumferential groove at the exterior of the case, and a member secured to the outside of the case and entering the groove of each knob shank to secure the latter against longitudinal movement relatively to the case.

HENRY G. VOIGHT. 

